foo.cc: In function 'int main()':
foo.cc:18:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
foo.cc:20:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", a + i); 
   ~~~~~^~~~~~~~~~~~~

自豪的采用 HydroJudge 进行评测(github.com/hydro-dev/HydroJudge)

正在同步测试数据，请稍后
{"receive":"2020-07-22T11:39:21.961Z","handle":"2020-07-22T11:39:21.961Z","cache_start":"2020-07-22T11:39:21.967Z","read_cases":"2020-07-22T11:39:22.481Z","judge":"2020-07-22T11:39:22.481Z","done":"2020-07-22T11:39:23.587Z"}